Marquis reagent — HDEP-28
White · Blue
HDEP-28
Source text (English): blue
HDEP-28 reagent analysis
There are more substances than colors, so to increase analysis precision use a kit with multiple reagents. Exact color of a reaction depends on adulteration, quantity, lighting, temperature, exposure to air, storage, as well as reagent quality and degradation. Positive or negative result does not indicate if a substance is safe. No substance is 100% safe.
HDEP-28
hdep-28
Mecke reagent — HDEP-28
White · Brown · Black
HDEP-28
Source text (English): dark brown > black
Mandelin reagent — HDEP-28
Yellow · Brown
HDEP-28
Source text (English): dark brown
Liebermann reagent — HDEP-28
White · Black
HDEP-28
Source text (English): black
Froehde reagent — HDEP-28
White · Red · Purple
HDEP-28
Source text (English): purplish red
Gallic reagent — HDEP-28
No reaction
HDEP-28
Source text (English): no color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.